I have a Marantz 2200 stereo receiver. The right output is fine. The left output is almost non existent, only if I max the volume do I hear anything and it is distorted and very very low in volume. I have did some trouble shooting and eliminated all the source inputs. Phono, FM, AM, Tape in out, and Aux. A 1khz test sine wave was used and both channels reach the Tone Amp Board (P500). Good output on the right channel, very very low distorted on the Left. Upon further volage test I found that the collector voltage on the Left channel transistor H506 is way down to 1.9 vdc. It is supposed to be 10 vdc. Supply voltage starts at 35 v. The opposite Right channel collector voltage is correct at 10 vdc. Any ideas where this large voltage drop is ocurring? I test R 518 out of circuit and its good but in circuit seems to be dropping way to much voltage. I will post schematics of the portion where the problem is and a whole schematic.
